Whenever try to slice the BMG Test Print, I get this error on Prusa. I'm running an ender 3 v1
You don't need that file... that's for the older version of the 3D Chameleon. All you need to do is to use PrusaSlicer's default Ender 3 profile and simply add our Tool Change GCode from our website.
Here's the video of where we document that:
You always want to make sure you start with a good working printer profile... so if you're already printing with one on PrusaSlicer, then that's the one you want to use.
I might add, if you continue to see this error, simply add the G92 E0 line to the layer change gcode. Apparently that's a change in 2.4, as it doesn't have that requirement in 2.3.